If you dey see flash of light or shadow—no ignore!
Read in: English | Pidgin English
Published on April 12, 2026 at 2:56β―AM
π©Ί Medically reviewed by the Health Decoded Guide Editorial Team · Last reviewed: July 2026
π Quick Breakdown
You fit begin see flash of light, floaters, or dark shadow for your eye.
Sometimes e no serious, but sometimes e fit mean say retina (d part of your eye wey help you see) get problem.
ππ½ If you suddenly see one dark shadow or something like curtain dey cover part of your eye, rush go hospital immediately.
π§ Wetin dey happen?
Flashes, floaters and shadows na visual changes wey happen when something affect d inside part of your eye.
• flashes fit look like lightning, spark or small small light rays
• floaters fit look like black dots, threads or cobweb wey dey move as your eye move
• shadow or curtain fit begin cover part of your vision and reduce wetin you fit see
ππ½ Some causes no serious, but some need urgent treatment to protect your eyesight.
π§ Why e dey happen?
• d clear jelly inside your eye (wey we dey call: vitreous) fit shrink as you dey grow older or because of some eye conditions
→ as e dey shrink e go pull d retina, and na dis on go make dey you fit begin see flashes of light
• as d vitreous dey change with age or some eye conditions, small small clumps fit dey form inside am
→ dem go cast shadow for d retina, so you go begin dey see black dots, threads or floaters dey move around your vision
• if d retina tear or detach
→ you fit begin see one dark shadow or something like curtain wey dey cover part of your vision
ππ½ Retina na d part of your eye wey detect light and send signals go your brain. If e get damaged, your eyesight fit dey at risk.
π§ How you go know say e no dey normal?
• you suddenly begin see plenty new floaters
→ especially if you never notice them before
• d flashes dey happen often or become stronger
→ instead of just one brief episode
• one dark shadow or curtain begin cover your vision
→ d shadow fit spread and con make you no fit see well
ππ½ These signs fit mean serious eye problem and need urgent medical attention.
π§ Wetin you fit do?
• no rub or press your eye
→ e no go solve the problem and e fit make things worse
• write down when d symptoms start and whether dem dey increase
→ dis fit help doctor understand wetin dey happen and diagnose d problem quickly
• avoid driving if your vision no clear
→ make another person help carry you go hospital if possible
• no delay to seek medical help
→ early treatment fit help save your eyesight
πΆπ©Ί When you suppose go hospital π¨
• sudden flashes together with plenty new floaters
• dark shadow or something like curtain dey cover part of your vision
• sudden loss or serious reduction of vision
If you notice any of these signs, go see eye doctor or go hospital immediately. No wait make d symptoms pass by themselves.
ππ½ These fit be signs of retinal detachment—a medical emergency wey need urgent treatment.
π§ Real life example
One evening, Chinedu just dey watch TV when e suddenly notice small small flashes of light for one eye.
E think say maybe na because e don tire, so e ignore am and go sleep.
D next morning, e begin see plenty new floaters, and later one small dark shadow come appear for d side of him vision.
Something just tell am make e no wait, but one of him friends tell am say na because e no sleep well.
Chinedu still decide say make e ask him girlfriend wey be nurse.
As she hear wetin happen, she tell am make e rush go eye clinic immediately.
As doctor examine am, dem discover say him retina don tear, but e never completely detach.
Because Chinedu come hospital early, doctor fit treat d tear before e cause permanent vision loss.
ππ½ Sometimes, small warning signs fit be d only chance your eye go give you.
Acting early fit make d difference between saving your eyesight and losing part of your vision o!
π’ Important Message
New flashes, plenty new floaters, or one dark shadow over your vision no be something to ignore.
ππ½ The earlier doctor check your eye, the better the chance to protect your eyesight.
π Reference
For full medical references, see English version of this article.
β οΈ Disclaimer
This article na for education only. E no replace advice from doctor.
If symptoms serious or no go, abeg see healthcare professional.
πRelated Health Topics
• Blurred vision
• Migraine
• Headache
• Eye Infection
• Confusion
• TIA (coming soon)
ππ½ If you still get questions or prefer full medical detail? Read English version